Faucet base



FIG. 1 is a perspective view of the new design for a faucet base;

FIG. 2 is a front elevational view of the new design for a faucet base, the rear elevational view being a mirror image;

FIG. 3 is a right side elevational view of the new design for a faucet base, the left side elevational view being a mirror image;

FIG. 4 is a top plan view of the new design for a faucet base; and,

FIG. 5 is a bottom plan view of the new design for a faucet base.

The broken lines in the Figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a faucet base, as shown and described. 